changed settings to my account
added remember token column to users
added remember me checkbox
updating settings gives them a new remember token and updates their cookies if necessary
added remember me logic through cookies
added the creation of remember_token to confirm action, changed securerandom.hex's to urlsafe_base64's
made current user method check for remember me cookies
current user method now explicitly returns @current user
made remember token attr accessible
added remember tokens to seeds file